I wasn't very impressed with the Haunted Mansion set. We had to wait several minutes to be crowded into a small hallway where we couldn't see anything, the CM wasn't talking loud, so we couldn't hear either.
When we finally got to see the exhibit portion, I was underimpressed, and bored.
I adore the Haunted Mansion ride, but the exhibit left a lot to be desired. IMO, not worth the time spent waiting.